CATALOG OF ORIGINAL DESCRIPTIONS: Zygostephanium constrictum Haeckel 1887

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: rads_cat -> Z -> Zygostephanium -> Zygostephanium constrictum
Other pages this level: Z. constrictum, Z. dizonium, Z. paradictyum

Zygostephanium constrictum

Citation: Zygostephanium constrictum Haeckel 1887
Rank: species
Type locality: LM28
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type repository: No information given
Described on page(s) : p.973

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Current identification:

Original Description
Frontal ring violin-shaped, concave on the upper and lower margins, with a deep sagittal constriction. Sagittal ring ovate, about two-thirds as high as the frontal ring. Both rings covered with numerous branched irregular spines, which partly anastomose along the edges of the rings, and produce small irregular polygonal pores.

Size: Height of the frontal ring 0.12, breadth 0.18.

Editors' Notes
There was no illustration of this species in Haeckel (1887)


Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs


Zygostephanium constrictum compiled by the radiolaria@mikrotax project team viewed: 20-6-2021

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